I've heard some of the fathers had a negative view of Sex, and they believed Sex to be either the reason or the consequence of the fall or both and that Original Sin is passed through concupiscence. The bible itself speaks of sex, in very explicit manners. Paragraphs like :
PR 5:19 (KJV) "... Let her breasts satisfy thee at all times; and be thou ravished always with her love."
SO 1:13 "My beloved is to me a bag of myrrh, that lies between my breasts."
SO 2:3 "I sat down under his shadow with great delight, and his fruit was sweet to my taste."
EZ 16:36 "... your shame was laid bare and your nakedness uncovered in your harlotries with your lovers ...."
EZ 16:37 "Therefore I am going to gather all your lovers, with whom you took pleasure, those you loved as well as those you hated. I will gather them against you from every side and will strip you in front of them, and they will see all your nakedness."
EZ 16:39 "... they will strip you of your clothes, ... and leave you naked and bare."
EZ 23:3 "They played the harlot in Egypt; they played the harlot in their youth; there were their breasts fondled and their virgin bosoms handled." Or, as the KJV puts it: "they bruised the teats of their virginity."
EZ 23:8 (KJV) "... in her youth they lay with her, and they bruised the breasts of her virginity, and poured their whoredom upon her."
EZ 23:17 (KJV) "And the Babylonians came to her into the bed of love, and they defiled her with their whoredom, and she was polluted with them ...."
EZ 23:20-21 (RSV) "Yet she increased her harlotry ... and doted on her paramours there, whose members [i.e., sexual organs] were like those of asses and whose issue was like that of horses. Thus you longed for the lewdness of your youth, when the Egyptians handled your bosom and pressed your young breasts."
EZ 23:29 (KJV) "... and shall leave thee naked and bare: and the nakedness of thy whoredoms shall be discovered, both thy lewdness and thy whoredoms."
EZ 23:34 "You shall ... pluck out your hair, and tear your breasts."
HO 1:2 (KJV) "And the Lord said to Hosea, Go, take unto thee a wife of whoredoms and children of whoredoms: for the land hath committed great whoredom.'"
So what are the 'Yes' and 'No's' of Sexuality according to the Bible? What is totally forbidden an outlawed in sex according to the Bible? Is 'premarital sex' outrageous? Is 'oral sex outrageous? Is 'anal sex; outrageous? Is homosexual sex outrageous? What about 'gender transformation'? Fetishes?